Home / 39,294.26-54,226.77-21,389.78

Finding the Fourth Proportional to 39,294.26, 54,226.77 and 21,389.78

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Solution

The fourth proportional to 39,294.26, 54,226.77 and 21,389.78 is: 29,518.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,294.26 : 54,226.77 = 21,389.78 : x
  2. Step 2: Convert to fraction form
    39,294.26/54,226.77 = 21,389.78/x
  3. Step 3: Cross multiply
    39,294.26x = 54,226.77 × 21,389.78
  4. Step 4: Simplify right side
    39,294.26x = 1,159,898,680.41
  5. Step 5: Solve for x
    x = 1,159,898,680.41/39,294.26
  6. Step 6: Final answer
    x = 29,518.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.